feat: add upstream core aliases from rocknix packages

emulators/genesis_plus_gx.yml

@@ -10,6 +10,7 @@ cores:
   - genesis_plus_gx
   - genesisplusgx
   - genesisplusgx-expanded
+  - genplus
 systems:
   - sega-megadrive
   - sega-megacd

emulators/mednafen_snes.yml

@@ -6,7 +6,7 @@ upstream: "https://mednafen.github.io/"
 profiled_date: "2026-03-24"
 core_version: "v0.9.26"
 display_name: "Nintendo - SNES / SFC (Beetle bsnes)"
-cores: [mednafen_snes]
+cores: [mednafen_snes, beetle_bsnes, beetle-bsnes]
 systems: [nintendo-snes]
 
 # Frozen at Mednafen's SNES module, itself based on bsnes v059.

emulators/mednafen_supafaust.yml

@@ -6,7 +6,7 @@ upstream: "https://mednafen.github.io/"
 profiled_date: "2026-03-24"
 core_version: "1.29.0"
 display_name: "Nintendo - SNES / SFC (Beetle Supafaust)"
-cores: [mednafen_supafaust]
+cores: [mednafen_supafaust, supafaust]
 systems: [nintendo-snes]
 
 # Port of Mednafen's experimental snes_faust module.

emulators/nxengine.yml

@@ -6,7 +6,7 @@ upstream: "https://github.com/Rox64/NXEngine"
 profiled_date: "2026-03-24"
 core_version: "1.0.0.6"
 display_name: "Cave Story (NXEngine)"
-cores: [nxengine]
+cores: [nxengine, nx]
 systems: [cave-story]
 
 notes: |

emulators/puae.yml

@@ -1,7 +1,7 @@
 emulator: PUAE (P-UAE)
 type: libretro
 core_classification: community_fork
-cores: [puae]
+cores: [puae, uae]
 source: "https://github.com/libretro/libretro-uae"
 upstream: "https://github.com/GnoStiC/PUAE"
 profiled_date: "2026-03-24"